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Clutter::Units.3pm
Langue: en
Version: 2010-08-25 (ubuntu - 24/10/10)
Section: 3 (Bibliothèques de fonctions)
NAME
Clutter::Units - A logical distance unitSYNOPSIS
$units = { type => 'mm', value => 12.0 }; $pixels = $units->to_pixels(); $units = Clutter::Units->from_em(3, "Sans 16px"); print $units->{value}; # "3" print $units->to_string(); # "3 em" $units = Clutter::Units->from_string("12 pt"); print $units->{type}; # "pt" print $units->to_pixels();
DESCRIPTION
Clutter::Units is a data structure holding a logical distance value along with its type, expressed as a value of the Clutter::UnitType enumeration.It is possible to use Clutter::Units to store a position or a size in units different than pixels, and convert them whenever needed (for instance inside the Clutter::Actor::allocate() virtual function, or inside the Clutter::Actor::get_preferred_width() and Clutter::Actor::get_preferred_height() virtual functions).
A Clutter::Units is represented by a hash reference with two keys, type, holding the unit type; and value, holding the value for the specified type.
The type key can contain one of the following:
- px : pixels
- em : em
- pt : typographic points
- mm : millimeters
The value key must contain a double.
HIERARCHY
Glib::Boxed +----Clutter::Units
METHODS
units = Clutter::Units->from_em ($em, $font_name=undef)
- •
- $em (double)
- •
- $font_name (string)
units = Clutter::Units->from_mm ($mm)
- •
- $mm (double)
units = Clutter::Units->from_pixels ($pixels)
- •
- $pixels (integer)
units = Clutter::Units->from_pt ($pt)
- •
- $pt (double)
units = Clutter::Units->from_string ($string)
- •
- $string (string)
double = $units->to_pixels
string = $units->to_string
ENUMS AND FLAGS
enum Clutter::UnitType
- •
- 'pixel' / 'CLUTTER_UNIT_PIXEL'
- •
- 'em' / 'CLUTTER_UNIT_EM'
- •
- 'mm' / 'CLUTTER_UNIT_MM'
- •
- 'point' / 'CLUTTER_UNIT_POINT'
- •
- 'cm' / 'CLUTTER_UNIT_CM'
SEE ALSO
Clutter, Glib::BoxedCOPYRIGHT
Copyright (C) 2006, 2007, 2008 OpenedHand LtdCopyright (C) 2009 Intel Corporation
This module is free software; you can redistribute it and/or modify it under the terms of either:
- •
- the GNU Lesser General Public Library version 2.1; or
- •
- the Artistic License, version 2.0.
See Clutter for the full copyright notice.
Contenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre